Finding the Third Proportional to 612,076.50 and 860,410.50

Step by Step Solution

1. Step 1: Write the proportion equation
   612,076.50 : 860,410.50 = 860,410.50 : x
2. Step 2: Convert to fraction form
   612,076.50/860,410.50 = 860,410.50/x
3. Step 3: Cross multiply
   612,076.50x = 860,410.50 × 860,410.50
4. Step 4: Simplify right side
   612,076.50x = 740,306,228,510.25
5. Step 5: Solve for x
   x = 740,306,228,510.25/612,076.50
6. Step 6: Final answer
   x = 1,209,499.51